FDIC Indemnification Asset [Abstract] FDIC Indemnification Asset [Roll Forward] FDIC Indemnification Asset [Roll Forward] FDIC Indemnification Asset and Liability, net FDIC Indemnification Asset and Liability, net FDIC Indemnification Asset and Liability, net Amortization of FDIC indemnification asset FDIC Indemnification Asset, Accretion of Discount Decrease in FDIC indemnification asset for claims filed Decrease (Increase) In FDIC Indemnification Asset, Claims Filed, Investing Activities Decrease (Increase) In FDIC Indemnification Asset, Claims Filed, Investing Activities Net loss on FDIC indemnification Net gain loss on indemnification asset Net gain loss on indemnification asset FDIC Indemnification Asset and Liability, net Banking and Thrift [Abstract] Banking and Thrift Disclosure [Text Block] Regulatory Capital Requirements under Banking Regulations [Text Block] Statement of Financial Position [Abstract] ASSETS Assets [Abstract] Covered loans Covered loans net of premiums, discounts and deferred fees and costs Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of covered loans and leases held in portfolio, including but not limited to, commercial and consumer loans. LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Stockholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock, par value (in Dollars per Share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in Shares) Common Stock, Shares Authorized Common stock, shares issued (in Shares) Common Stock, Shares, Issued Common stock, shares outstanding (in Shares) Common Stock, Shares, Outstanding Organization, Consolidation and Presentation of Financial Statements [Abstract] Summary of Significant Accounting Policies [Table] Summary of Significant Accounting Policies [Table] Summary of Significant Accounting Policies [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] NEW YORK NEW YORK Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Building and Building Improvements [Member] Building and Building Improvements [Member] Leasehold Improvements [Member] Leasehold Improvements [Member] Furniture, Fixtures And Equipment [Member] Furniture, Fixtures And Equipment [Member] Computer Equipment [Member] Computer Equipment [Member] Software and Software Development Costs [Member] Software and Software Development Costs [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Summary of Significant Accounting Policies [Line Items] Summary of Significant Accounting Policies [Line Items] [Line Items] for Summary of Significant Accounting Policies [Table] Property, Plant and Equipment, Useful Life Property, Plant and Equipment, Useful Life Subsidiary Number Of Subsidiaries Number Of Subsidiaries Number of branches located in Florida (in Branches) Number of branches located in Florida (in Branches) The number of BankUnited branches Number of Florida counties with branches (in counties) Number of geographic areas BankUnited branches are located in (in Counties) The number of Florida counties that the bank operates in. Number of branches located in New York metropolitan area (in Branches) Number of branches located in New York metropolitan area (in Branches) Number of branches located in New York. Number of loss sharing agreements Number Of Loss Sharing Agreements Number of Loss Sharing Agreements Percent FDIC will reimburse for covered losses (in Percent) Percent FDIC will reimburse for covered losses (in Percent) Percent that FDIC covers losses under loss sharing agreement. Limit on losses reimbursed at 80% Maximum amount FDIC will reimburse Maximum amount FDIC will reimburse BankUnited Percent of losses in excess of limit FDIC will reimburse (in Percent) Percent of losses in excess of maximum amount FDIC will reimburse (in Percent) Percent of losses in excess of maximum amount FDIC will reimburse BankUnited Period of no missed payments, borrower exempt from troubled-debt restructuring (in Duration) Period of no missed payments, borrower exempt from troubled-debt restructuring (in Duration) Period of no missed payments, borrower exempt from troubled-debt restructuring. Period pursuant to modified loan terms of borrower compliance loan is returned to accrual status (in Duration) Period pursuant to modified loan terms of borrower compliance loan is returned to accrual status (in Duration) Period pursuant to modified loan terms of borrower compliance loan is returned to accrual status. Percentage floor, after which the likelihood that the tax benefit related to uncertain tax positions are measured (in Percent) Percentage floor, after which the likelihood that the tax benefit related to uncertain tax positions are measured (in Percent) Percentage floor, after which the likelihood that the tax benefit related to uncertain tax positions are measured. Goodwill Goodwill Minimum period of delinquency for new open- and closed-end loans secured by residential real estate, at which an assessment of collateral value is made (in Duration) Minimum period of delinquency for new open- and closed-end loans secured by residential real estate, at which an assessment of collateral value is made (in Duration) Minimum period of delinquency for new open- and closed-end loans secured by residential real estate, at which an assessment of collateral value is made. Period of delinquency of principal or interest at which new and non-ACI commercial loans are placed on non-accrual status unless the loan is well-secured and in the process of collection (in Duration) Period of delinquency of principal or interest at which new and non-ACI commercial loans are placed on non-accrual status unless the loan is well-secured and in the process of collection (in Duration) Period of delinquency of principal or interest at which new and non-ACI commercial loans are placed on non-accrual status unless the loan is well-secured and in the process of collection. Period of delinquency of interest at which new and non-ACI residential and consumer loans are placed on non-accrual status unless the loan is well-secured and in the process of collection (in Duration) Period of delinquency of interest at which new and non-ACI residential and consumer loans are placed on non-accrual status unless the loan is well-secured and in the process of collection (in Duration) Period of delinquency of interest at which new and non-ACI residential and consumer loans are placed on non-accrual status unless the loan is well-secured and in the process of collection. Minimum period of delinquency of any outstanding loan balance in excess of fair value less cost to sell, at which it is charged off (in Duration) Minimum period of delinquency of any outstanding loan balance in excess of fair value less cost to sell, at which it is charged off (in Duration) Minimum period of delinquency of any outstanding loan balance in excess of fair value less cost to sell, at which it is charged off. Period after receipt of notification of filing from the bankruptcy court at which any outstanding balance in excess of fair value of collateral less cost to sell, at which it is charged off (in Duration) Period after receipt of notification of filing from the bankruptcy court at which any outstanding balance in excess of fair value of collateral less cost to sell, at which it is charged off (in Duration) Period after receipt of notification of filing from the bankruptcy court at which any outstanding balance in excess of fair value of collateral less cost to sell, at which it is charged off. Period within determination of loss if all borrowers are deceased, at which any outstanding balance in excess of fair value of collateral less cost to sell, at which it is charged off (in Duration) Period within determination of loss if all borrowers are deceased, at which any outstanding balance in excess of fair value of collateral less cost to sell, at which it is charged off (in Duration) Period within determination of loss if all borrowers are deceased, at which any outstanding balance in excess of fair value of collateral less cost to sell, at which it is charged off. Period within days of discovery of fraudulent activity, at which any outstanding balance in excess of fair value of collateral less cost to sell, at which it is charged off (in Duration) Period within days of discovery of fraudulent activity, at which any outstanding balance in excess of fair value of collateral less cost to sell, at which it is charged off (in Duration) Period within days of discovery of fraudulent activity, at which any outstanding balance in excess of fair value of collateral less cost to sell, at which it is charged off. Minimum period of delinquency at which a four quarter roll matrix is used to estimate the amount within each delinquency bucket (in Duration) Minimum period of delinquency at which a four quarter roll matrix is used to estimate the amount within each delinquency bucket (in Duration) Minimum period of delinquency at which a four quarter roll matrix is used to estimate the amount within each delinquency bucket. Period of delinquency of consumer loans, at which, at which they are charged off when management deems them to be uncollectible (in Duration) Period of delinquency of consumer loans, at which, at which they are charged off when management deems them to be uncollectible (in Duration) Period of delinquency of consumer loans, at which, at which they are charged off when management deems them to be uncollectible. Percent of loss severity assumption for home equity loans and lines of credit projected to roll to 120 days delinquency (in Percent) Percent of loss severity assumption for home equity loans and lines of credit projected to roll to 120 days delinquency (in Percent) Percent of loss severity assumption for home equity loans and lines of credit projected to roll to 120 days delinquency. Period of delinquency at which 100% loss severity is assumed (in Duration) Period of delinquency at which 100% loss severity is assumed (in Duration) Period of delinquency at which 100% loss severity is assumed. Loans and Leases Receivable, Net Charge-Off Rate Calculation, Banks Used In Assumption Loans and Leases Receivable, Net Charge-Off Rate Calculation, Banks Used In Assumption Loans and Leases Receivable, Net Charge-Off Rate Calculation, Banks Used In Assumption Period of principal or interest paid at which new and non-ACI residential loans are returned to accrual status (in Duration) Period of principal or interest paid at which new and non-ACI residential loans are returned to accrual status (in Duration) Period of principal or interest paid at which new and non-ACI residential loans are returned to accrual status. Maximum period of loans past due reported as current (in Duration) Maximum period of loans past due reported as current (in Duration) Maximum period of loans past due reported as current. Debt Issuance Cost Debt Issuance Cost Receivables [Abstract] Loans and Allowance for Loan and Lease Losses Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Demand deposits: Deposits [Abstract] Non-interest bearing, average balance Non-interest bearing, average balance Average balance of domestic noninterest-bearing deposits held by the entity, which may include demand deposits, checking, brokered and retail deposits. Non-interest bearing, average rate (in Percent) Non-interest bearing, average rate (in Percent) The weighted average interest rate for domestic non-interest bearing deposits. Interest bearing, average balance Interest bearing, average balance Average balance of interest-bearing domestic deposit liabilities, which may include brokered, retail, demand, checking, notice of withdrawal, money market and other interest-bearing deposits. Interest-bearing, average rate (in Percent) Interest-bearing, average rate (in Percent) The weighted average interest rate for domestic interest-bearing deposits. Money market, average balance Money market, average balance Average balance of deposits in accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts. Weighted Average Rate Domestic Deposit, Money Market Weighted Average Rate Domestic Deposit, Money Market Savings, average balance Savings, average balance Average balance of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs). Weighted Average Rate Domestic Deposit, Savings Weighted Average Rate Domestic Deposit, Savings Time, average balance Time, average balance Average balance of deposits that cannot be withdrawn before a set date without penalty or for which notice of withdrawal is required. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts. Weighted Average Rate Domestic Deposit, Time Deposits Weighted Average Rate Domestic Deposit, Time Deposits Total, average balance Total, average balance Average balance of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others. Weighted Average Rate Domestic Deposit Weighted Average Rate Domestic Deposit Derivative Instruments and Hedging Activities Disclosure [Abstract] Gross Amounts Recognized, Derivative assets Derivative Asset, Fair Value, Gross Asset Gross Amounts Recognized, Derivative liabilities Derivative Liability, Fair Value, Gross Liability Gross Amounts Recognized, Derivative assets and liabilities Gross Amounts Recognized Derivative Assets And Liabilities Gross Amounts Recognized Derivative Assets And Liabilities Gross Amounts Offset in Balance Sheet, Derivative assets Derivative Asset, Collateral, Obligation to Return Cash, Offset Gross Amounts Offset in Balance Sheet, Derivative liabilities Derivative Liability, Collateral, Right to Reclaim Cash, Offset Gross Amounts Offset in Balance Sheet, Derivative assets and liabilities Derivative Asset (Liability), Collateral, Offset Derivative Asset (Liability), Collateral, Offset Net Amounts Presented in Balance Sheet, Derivative assets Derivative Asset, Fair Value, Amount Not Offset Against Collateral Net Amounts Presented in Balance Sheet, Derivative liabilities Derivative Liability, Fair Value, Amount Not Offset Against Collateral Net Amounts Presented in Balance Sheet, Derivative assets and liabilities Derivative Asset (Liability), Fair Value, Amount Not Offset Against Collateral Derivative Asset (Liability), Fair Value, Amount Not Offset Against Collateral Gross Amounts Not Offset in Balance Sheet Derivative Asset, Fair Value, Amount Not Offset Against Collateral [Abstract] Derivative Instruments, Derivative assets Derivative Asset, Fair Value, Gross Liability Derivative Instruments, Derivative liabilities Derivative Liability, Fair Value, Gross Asset Derivative Instruments, Derivative assets and liabilities Derivative Asset (Liability), Fair Value, Gross Liability (Asset) Derivative Asset (Liability), Fair Value, Gross Liability (Asset) Collateral Pledged, Derivative assets Derivative Asset, Fair Value of Collateral Collateral Pledged, Derivative liabilities Derivative Liability, Fair Value of Collateral Collateral Pledged, Derivative assets and liabilities Derivative asset, liability fair value of collateral Derivative asset, liability fair value of collateral. Net Amount, Derivative assets Derivative Asset Net Amount, Derivative liabilities Derivative Liability Net Amount, Derivative assets and liabilities Derivative Assets (Liabilities), at Fair Value, Net Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Commercial Servicing Rights Commercial Servicing Rights [Member] [Member] Commercial Servicing Rights [Member] [Member] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] Loans held for investment Business Combination, Loans Held For Investment [Member] Business Combination, Loans Held For Investment [Member] Loans held for sale Business Combination, Loans Held For Sale [Member] Business Combination, Loans Held For Sale [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Loans Business Combination, Acquired Receivables, Fair Value Servicing rights Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets Total assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Total liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Estimated fair value of net assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Consideration issued Business Combination, Consideration Transferred Excess of consideration issued over fair value of net assets acquired Business Acquisition, Goodwill, Expected Tax Deductible Amount Schedule of Assets Acquired and Liabilities Assumed Schedule of Business Acquisitions, by Acquisition [Table Text Block] Condensed Financial Statements [Abstract] Condensed Financial Statements [Abstract] Condensed Financial Information of Parent Company Only Disclosure [Text Block] Condensed Financial Information of Parent Company Only Disclosure [Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Number of Option Awards Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Exercised (in Shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Range of the closing price on date of grant, minimum (in Dollars per Share) Range of the closing price on date of grant, minimum (in Dollars per Share) Range of the closing price on date of grant, minimum. Aggregate grant date fair value of shares vesting Aggregate grant date fair value of shares vesting Aggregate grant date fair value of shares vesting during the year Options Granted Options Granted [Abstract] Range of the closing price on date of grant, maximum (in Dollars per Share) Range of the closing price on date of grant, maximum (in Dollars per Share) Range of the closing price on date of grant, maximum. Equity [Abstract] Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Schedule of Guarantor Obligations [Table] Schedule of Guarantor Obligations [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Net Loss on FDIC Indemnification Net Gain Loss on Indemnification Asset [Member] Net Impact on Pre-tax Earnings Net Impact on Pretax Earnings [Member] Guarantor Obligations [Line Items] Guarantor Obligations [Line Items] Document Fiscal Year Focus Document Fiscal Year Focus Recovery of (provision for) losses on covered loans Provision For Covered Loans And Unfunded Commitments Provision For Covered Loans And Unfunded Commitments Income from resolution of covered assets, net Income from resolution of covered assets, net Income from resolution of covered assets, net Gain on sale of covered loans Gain (Loss) on sale of loans, net (loss related to covered loans) The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans and leases, including covered loans that were sold during the reporting period. Gain on covered investment securities available for sale Gain (Loss) On Covered Investment Securities Available-For-Sale Gain (Loss) On Covered Investment Securities Available-For-Sale Gain on covered OREO (Gain) Loss on covered OREO, net (Gain) loss on covered OREO, net Gain (Loss) Associated With Covered Assets Gain (Loss) Associated With Covered Assets Gain (Loss) Associated With Covered Assets Provision For Covered Unfunded Commitments Provision For Covered Unfunded Commitments Provision For Covered Unfunded Commitments Condensed Financial Information of Parent Company Only Disclosure [Abstract] Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Parent Company [Member] Parent Company [Member] Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] Assets: Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Investment securities available for sale, at fair value Available-for-sale Securities Investment in subsidiaries Investment in subsidiaries Investment in subsidiaries. Deferred tax asset, net Deferred Tax Assets, Net of Valuation Allowance Other assets Other Assets Total assets Assets Liabilities and Stockholders' Equity: Notes Payable Notes Payable Liabilities Liabilities Stockholders' equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders' equity Liabilities and Equity Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] New Loans New Loans [Member] ACI Loans, Non-Covered ACI Loans, Non-covered [Member] ACI Loans, Non-covered [Member] ACI Loans, Covered ACI Loans, Covered [Member] ACI Loans, Covered [Member] Non-ACI Non-ACI Loans, Covered [Member] Non-ACI Loans, Covered [Member] Class of Financing Receivable [Axis] Class of Financing Receivable, Type [Axis] Financing Receivable Recorded Investment by Class of Financing Receivable [Domain] Class of Financing Receivable, Type [Domain] 1-4 single family residential 1-4 single family residential [Member] Home equity loans and lines of credit Home equity loans and lines of credit [Member] Residential Residential Portfolio Segment [Member] Multi-family Multifamily [Member] Commercial real estate, Owner occupied Commercial Real Estate Owner Occupied [Member] Commercial Real Estate Owner Occupied [Member] [Member] Commercial real estate, Non-owner occupied Commercial Real Estate Non-Owner Occupied [Member] Commercial Real Estate Non-Owner Occupied [Member] Construction and land Construction and land [Member] Commercial and industrial Commercial and industrial [Member] Commercial Lending Subsidiaries Commercial Finance Subsidiaries [Member] Commercial Finance Subsidiaries [Member] Commercial Commercial Portfolio Segment [Member] Consumer Consumer Portfolio Segment [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Capital Leases, Future Minimum Payments Receivable, Next Twelve Months Capital Leases, Future Minimum Payments Receivable, Next Twelve Months Non-covered loans, gross Loans and Leases Receivable, Gross Covered loans, gross Loans and Leases Receivable, Gross, Carrying Amount, Covered Loans, gross Loans and Leases Receivable, Gross, Covered and Non-Covered Gross carrying amount of all categories of loans and leases held in portfolio, before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Includes receivables covered through loss sharing agreements. Non-covered premiums, discounts and deferred fees and costs, net Loans and Leases Receivable, Deferred Income Covered premiums, discounts and deferred fees and costs, net Premiums, discounts and deferred fees and costs, net, covered loans Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Limited to amounts for loans and leases covered under loss sharing agreements. Premiums, discounts and deferred fees and costs, net Premiums, discounts and deferred fees and costs, net, covered and non-covered loans Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Includes covered and not covered loans. Non-covered loans, net of premiums, discounts and deferred fees and costs Loans and Leases Receivable, Net of Deferred Income Covered loans net of premiums, discounts and deferred fees and costs Loans net of premiums, discounts and deferred fees and costs Loans net of premiums, discounts and deferred fees and costs, covered and non-covered Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of covered and not covered loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Non-covered Allowance for loan and lease losses Loans and Leases Receivable, Allowance Covered Allowance for loan and lease losses Loans and Leases Receivable, Allowance, Covered Allowance for loan and lease losses Allowance for loan and lease losses, covered and non-covered loans Amount of allowance for loan and lease losses covered and not covered by loss sharing agreements. Non-covered loans, net Loans and Leases Receivable, Net Amount Covered loans, net Loans and Leases Receivable, Net Reported Amount, Covered Loans, net Loans and Leases Receivable, Net Reported Amount, Covered and Not Covered Percent of Total Percent of total loans (in Percent) The percent of total loans. Capital Leases, Future Minimum Payments, Receivable in Two Years Capital Leases, Future Minimum Payments, Receivable in Two Years Capital Leases, Future Minimum Payments, Receivable in Three Years Capital Leases, Future Minimum Payments, Receivable in Three Years Capital Leases, Future Minimum Payments, Receivable in Four Years Capital Leases, Future Minimum Payments, Receivable in Four Years Capital Leases, Future Minimum Payments, Receivable in Five Years Capital Leases, Future Minimum Payments, Receivable in Five Years Capital Leases, Future Minimum Payments, Receivable Thereafter Capital Leases, Future Minimum Payments, Receivable Thereafter Capital Leases, Net Investment in Direct Financing Leases, Minimum Payments to be Received Capital Leases, Net Investment in Direct Financing Leases, Minimum Payments to be Received Capital Leases, Net Investment in Direct Financing Leases, Unguaranteed Residual Values of Leased Property Capital Leases, Net Investment in Direct Financing Leases, Unguaranteed Residual Values of Leased Property Capital Leases, Future Minimum Payments Due Capital Leases, Future Minimum Payments Due Capital Leases, Net Investment in Direct Financing Leases, Deferred Income Capital Leases, Net Investment in Direct Financing Leases, Deferred Income Capital Leases, Net Investment in Direct Financing Leases, Initial Direct Costs Capital Leases, Net Investment in Direct Financing Leases, Initial Direct Costs Transfers and Servicing [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other Liabilities Other Liabilities [Member] Deferred Bonus and Profit Sharing Arrangements, Individual Contracts, Type of Deferred Compensation [Axis] Deferred Bonus and Profit Sharing Arrangements, Individual Contracts, Type of Deferred Compensation [Axis] Deferred Bonus and Profit Sharing Arrangement, Individual Contract, Type of Deferred Compensation [Domain] Deferred Bonus and Profit Sharing Arrangement, Individual Contract, Type of Deferred Compensation [Domain] Deferred Compensation Plan, First 1% Of Eligible Compensation [Member] Deferred Compensation Plan, First 1% Of Eligible Compensation [Member] Deferred Compensation Plan, First 1% Of Eligible Compensation [Member] Deferred Compensation Plan, 2% To 6% Of Eligible Compensation [Member] Deferred Compensation Plan, 2% To 6% Of Eligible Compensation [Member] Deferred Compensation Plan, 2% To 6% Of Eligible Compensation [Member] Deferred Compensation Plan [Member] Deferred Compensation Plan [Member] Deferred Compensation Plan [Member] 401(k) Plan, First 1% Of Eligible Compensation [Member] 401(k) Plan, First 1% Of Eligible Compensation [Member] 401(k) Plan, First 1% Of Eligible Compensation [Member] 401(k) Plan, 2% To 6% Of Eligible Compensation [Member] 401(k) Plan, 2% To 6% Of Eligible Compensation [Member] 401(k) Plan, 2% To 6% Of Eligible Compensation [Member] 401(k) Plan [Member] 401(k) Plan [Member] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2010 Plan 2010 Plan [Member] 2014 Plan [Member] 2014 Plan [Member] 2014 Plan [Member] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Unvested Share Awards, Employment Inducement [Member] Unvested Share Awards, Employment Inducement [Member] Unvested Share Awards, Employment Inducement [Member] Restricted Stock Restricted Stock [Member] Performance Shares [Member] Performance Shares [Member] Employee Stock Option Exchanged For PIUs [Member] Employee Stock Option Exchanged For PIUs [Member] Employee Stock Option Exchanged For PIUs [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Deferred Compensation Arrangement with Individual, Cash Awards Granted, Percentage Deferred Compensation Arrangement with Individual, Cash Awards Granted, Percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Aggregate fair value of share awards granted Stock Granted, Value, Share-based Compensation, Gross Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Percent of elective deferrals which vest immediately (in Percent) Percent of elective deferrals which vest immediately (in Percent) Percent of elective deferrals which vest immediately. Percent of matching contributions which vest upon the earlier of a defined change in control or the participant's death, disability, attainment of normal retirement age, or the completion of two years of service (in Percent) Percent of matching contributions which vest upon the earlier of a defined change in control or the participant's death, disability, attainment of normal retirement age, or the completion of two years of service (in Percent) Percent of matching contributions which vest upon the earlier of a defined change in control or the participant's death, disability, attainment of normal retirement age, or the completion of two years of service. Vesting period of employer contributions (in Duration) Vesting period of employer contributions (in Duration) Vesting period of employer contributions. Deferred Compensation Arrangement with Individual, Compensation Expense Deferred Compensation Arrangement with Individual, Compensation Expense Deferred Compensation Liability, Current and Noncurrent Deferred Compensation Liability, Current and Noncurrent Deferred Compensation Arrangement with Individual, Employer Contribution Deferred Compensation Arrangement with Individual, Employer Contribution Property, Plant and Equipment, Type [Abstract] Property, Plant and Equipment, Type [Abstract] Amount included buildings and improvements recorded under capital lease Amount included buildings and improvements recorded under capital lease Amount included in buildings and improvements recorded under capital lease. Depreciation, Nonproduction Depreciation, Nonproduction Operating Leases, Rent Expense, Net Operating Leases, Rent Expense, Net Investments, Debt and Equity Securities [Abstract] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] U.S. Government agency and sponsored enterprise residential and commercial mortgage-backed securities U.S. Government agency and sponsored enterprise residential and commercial mortgage-backed securities [Member] Resecuritized real estate mortgage investment conduits ("Re-Remics") [Member] Resecuritized real estate mortgage investment conduits ("Re-Remics") [Member] Private label residential mortgage-backed securities and CMOs Residential Mortgage Backed Securities [Member] Private label commercial mortgage-backed securities Commercial Mortgage Backed Securities [Member] Single family rental real estate-backed securities Single family rental real estate-backed securities [Member] Single family rental real estate-backed securities [Member] Collateralized loan obligations Collateralized Loan Obligations [Member] State and municipal obligations US States and Political Subdivisions Debt Securities [Member] Small Business Administration (SBA) securities Small Business Administration securities [Member] Net Gain Loss on Indemnification Asset [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Investment securities available for sale Available-for-sale securities, amortized cost Available-for-sale Securities, Amortized Cost Basis Number of held-to-maturity securities Number Of Held-To-Maturity Securities Number Of Held-To-Maturity Securities Investment securities held to maturity Held-to-maturity Securities Weighted average life of investment portfolio (in Duration) Weighted average life of investment portfolio (in Duration) Weighted average life of investment portfolio. Effective duration of investment portfolio (in Duration) Effective duration of investment portfolio (in Duration) Effective duration of investment portfolio. Available-for-sale Securities Pledged as Collateral Available-for-sale Securities Pledged as Collateral Number of securities determined to be other than temporarily impaired during the period (in Securities) Number of securities determined to be other than temporarily impaired during the period Number of securities which impairment considered insignificant (in Securities) Number of securities which impairment considered insignificant (in Securities) Number of securities which impairment was considered insignificant. Available-for-sale securities, gross unrealized loss, considered insignificant Available-for-sale securities, Gross Unrealized Loss, Considered Insignificant for OTTI Analysis Available-for-sale securities, Gross Unrealized Loss, Considered Insignificant for OTTI Analysis Number of securities in unrealized loss positions (in Securities) Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Unrealized loss as a percent of amortized cost on securities in continuous unrealized loss positions (or less, less than) Unrealized loss as a percent of amortized cost on securities in continuous unrealized loss positions Unrealized loss as a percent of amortized cost on securities in continuous unrealized loss positions Equity Based Compensation [Abstract] Equity Based Compensation [Abstract] Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] Schedule of Nonvested Share Activity [Table Text Block] Schedule of Nonvested Share Activity [Table Text Block] Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] ACI loans ACI loans [Member] Non-ACI loans Non-ACI loans [Member] New Loans New and Non-ACI loans New and Non-ACI loans [Member] Class of Financing Receivable, Type [Domain] Residential Commercial Consumer Financing Receivable Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Allowance for Loan and Lease Losses [Roll Forward] Allowance for Loan and Lease Losses [Roll Forward] Beginning Balance Financing Receivable, Allowance for Credit Losses Provision for (recovery of) loan losses Provision for Loan and Lease Losses Charge-offs Allowance for Loan and Lease Losses, Write-offs Recoveries Allowance for Loan and Lease Loss, Recovery of Bad Debts Ending Balance Allowance, balance, loans individually evaluated for impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Allowance, balance, loans collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Loans individually evaluated for impairment, balance Financing Receivable, Individually Evaluated for Impairment Loans collectively evaluated for impairment, balance Financing Receivable, Collectively Evaluated for Impairment Loans net of premiums, discounts and deferred fees and costs Advances from Federal Home Loan Banks [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Federal Reserve Bank Advances [Member] Federal Reserve Bank Advances [Member] Federal Funds Lines of Credit [Member] Federal Funds Lines of Credit [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Amount interest expense reduced by amortization of modification costs Amount interest expense reduced by amortization of modification costs Amount interest expense reduced by amortization of modification costs Percent of outstanding FHLB Advances of which the sum of qualifying first mortgages, CRE loans, Home equity lines and credit and mortgage-backed securities pledged must equal (in Percent) Percent of outstanding FHLB Advances of which the sum of qualifying first mortgages, CRE loans, Home equity lines and credit and mortgage-backed securities pledged must equal (in Percent) Percent of outstanding FHLB Advances of which the sum of qualifying first mortgages, CRE loans, Home equity lines and credit and mortgage-backed securities pledged must equal Pledged Financial Instruments, Not Separately Reported, Securities for Federal Home Loan Bank Pledged Financial Instruments, Not Separately Reported, Securities for Federal Home Loan Bank Debt Instrument, Interest Rate, Effective Percentage Debt Instrument, Interest Rate, Effective Percentage Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds Unused borrowing capacity at FRB Debt Instrument, Unused Borrowing Capacity, Amount Unused Borrowing Capacity - Fed Funds lines of credit Line of Credit Facility, Current Borrowing Capacity Proceeds from sale of investment securities available for sale Proceeds from Sale of Available-for-sale Securities Gross realized gains Available-for-sale Securities, Gross Realized Gains Gross realized losses Available-for-sale Securities, Gross Realized Losses Net realized gain Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments Other than Temporary Impairment Losses, Investments, Available-for-sale Securities Other than Temporary Impairment Losses, Investments, Available-for-sale Securities Available-for-sale Securities, Gross Realized Gain (Loss) Available-for-sale Securities, Gross Realized Gain (Loss) Quarterly Financial Information Disclosure [Abstract] Quarterly Financial Information [Text Block] Quarterly Financial Information [Text Block] FDIC indemnification asset FDIC Indemnification Asset Other Liabilities FDIC Indemnification Liability FDIC Indemnification Liability FDIC Indemnification Asset and Liability, net Fair Value Disclosures [Abstract] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] Other debt securities Other Debt Obligations [Member] Mortgage Servicing Rights [Member] Mortgage Servicing Rights [Member] Mortgage Servicing Rights [Member] Derivative Assets Derivative assets [Member] Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Derivative Liabilities Derivative liabilities [Member] Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Balance at beginning of period, fair value of assets Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Gains (losses) for the period included in Other comprehensive income (loss) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Premium and discount (amortization) accretion Amortization Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Balance at end of period, fair value of assets Schedule of Changes in AOCI Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of the Categories of AOCI and Changes Therein Comprehensive Income (Loss) [Table Text Block] Income Tax Disclosure [Abstract] Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Statutory federal income tax rate (in Percent) Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Uncertain state tax positions, amount Uncertain state tax positions, lapse of statute, amount The portion of the difference between the effective income tax amount and domestic federal statutory income tax amount attributable to the lapse of the statute of limitations related to uncertain state tax positions. Effective Income Tax Rate Reconciliation Uncertain Tax Positions Reversal Effective Income Tax Rate Reconciliation Uncertain Tax Positions Reversal Effective Income Tax Rate Reconciliation - Reversal of Uncertain Tax Positions due to lapse in statute of limitations Discrete Income Tax Benefit Discrete Income Tax Benefit Discrete Income Tax Benefit Effective Income Tax Rate Reconciliation, Discrete Tax Benefit Effective Income Tax Rate Reconciliation, Discrete Tax Benefit Effective Income Tax Rate Reconciliation, Discrete Tax Benefit - increase in basis of certain assets Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Income Tax Expense (Benefit) Income Tax Expense (Benefit) Effective Income Tax Rate Reconciliation, Percent Effective Income Tax Rate Reconciliation, Percent Premises and Equipment and Lease Commitments [Abstract] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Transportation Equipment [Member] Transportation Equipment [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property, Plant and Equipment, Gross Property, Plant and Equipment, Gross Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property, Plant and Equipment, Net Property, Plant and Equipment, Net Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Inputs, Level 1 Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 US Treasury Securities US Treasury Securities [Member] U.S. Government agency and sponsored enterprise residential mortgage-backed securities US Government agency and sponsored enterprise residential mortgage-backed securities [Member] US Government agency and sponsored enterprise residential mortgage-backed securities [Member] U.S. Government agency and sponsored enterprise commercial mortgage-backed securities US Government agency and sponsored enterprise commercial mortgage-backed securities [Member] Collateralized loan obligations Non-mortgage asset-backed securities Non-mortgage asset-backed securities [Member] Preferred stocks Equity Securities [Member] State and municipal obligations Other debt securities Derivative assets Derivative liabilities Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Assets, fair value Assets, Fair Value Disclosure, Recurring Liabilities at fair value Liabilities, Fair Value Disclosure, Recurring Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Fair Value Portion at Fair Value Measurement [Member] Carrying Value Reported Value Measurement [Member] Fair Value, Inputs, Levels 1, 2, And 3 Fair Value, Inputs, Levels 1, 2, And 3 [Member] Fair Value, Inputs, Levels 1, 2, And 3 [Member] Fair Value, Inputs, Levels 2 And 3 Fair Value, Inputs, Levels 2 And 3 [Member] Fair Value, Inputs, Levels 2 And 3 [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Investment securities held to maturity Held-to-maturity Securities, Fair Value Non-marketable equity securities Federal Home Loan Bank Stock and Federal Reserve Bank Stock Loans held for sale Loans Held-for-sale, Fair Value Disclosure Covered loans Covered loans, Fair Value This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents covered loan receivable as presented on the statement of financial position which may include mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts, or any other loans which are due the Company as of the balance sheet date. Non-covered loans Non-covered loans, Fair Value This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents non-covered loan receivable as presented on the statement of financial position which may include mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts, or any other loans which are due the Company as of the balance sheet date. FDIC indemnification asset FDIC indemnification asset, Fair Value Fair value amount of receivable assets originating from the indemnification agreement with the Federal Deposit Insurance Corporation (FDIC), in which the FDIC is to partially cover losses. Accrued interest receivable Interest Receivable Derivative assets Liabilities: Liabilities [Abstract] Demand, savings and money market deposits Deposits, Money Market Deposits and Negotiable Order of Withdrawal (NOW) Time Deposits Time Deposits FHLB advances Federal Home Loan Bank Borrowings, Fair Value Disclosure Notes Payable, Fair Value Disclosure Notes Payable, Fair Value Disclosure Accrued interest payable Interest Payable Derivative liabilities Schedule of Available-for-sale Securities Reconciliation Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Investments Classified by Contractual Maturity Date Investments Classified by Contractual Maturity Date [Table Text Block] Schedule of Realized Gain (Loss) Schedule of Realized Gain (Loss) [Table Text Block] Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block] Recorded investment in loans on non-accrual status Financing Receivable, Recorded Investment, Nonaccrual Status UPB of acquired loans Business Combination, Acquired Receivables, Gross Contractual Amount UPB not expected to be collected Business Combination, Acquired Receivables, Estimated Uncollectible Condensed Income Statement [Table] Condensed Income Statement [Table] Condensed Income Statements, Captions [Line Items] Condensed Income Statements, Captions [Line Items] Investment securities Interest and Dividend Income, Securities, Operating, Available-for-sale Service fees from subsidiaries Service fees from subsidiaries Service fees from subsidiaries. Equity in earnings of subsidiaries Equity in earnings of subsidiaries Equity in earnings of subsidiaries. Other Income Other Income Total Income Total Income Represents the portion of consolidated total income for the period, before taxes, which is attributable to the parent. Interest Expense, Borrowings Interest Expense, Borrowings Employee compensation and benefits Labor and Related Expense Other expense Other expense Other expense. Total expense Total expense Represents total expense which is attributable to the parent. Income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Provision for income taxes Net income Net Income (Loss) Attributable to Parent Premises and Equipment and Lease Commitments Premises and Equipment and Lease Commitments Disclosure of premises and equipment costs included in other assets and disclosure of lease obligations. Acquisition Activity Business Combination Disclosure [Text Block] OREO [Member] OREO [Member] OREO and Repossessed Assets [Member] OREO and Repossessed Assets [Member] OREO and Repossessed Assets [Member] Impaired Loans Impaired Loans [Member] Nonrecurring Changes in Fair Value Assets, Fair Value Disclosure, Nonrecurring Gains (Losses) from Fair Value Changes Assets, Fair Value Adjustment Cash proceeds, net of transaction costs Proceeds from Sale of Loans Receivable Carrying value of loans transferred to loans held for sale Financing Receivable, Reclassification to Held-for-sale Provision for loan losses recorded upon transfer to loans held for sale Provision for loan losses recorded upon transfer to loans held for sale Provision for loan losses recorded upon transfer to loans held for sale Recorded investment in loans sold Recorded investment in loans sold Recorded investment in loans sold Gain (loss) on sale of covered loans Gain (Loss) on indemnification asset from covered loans sold Gain (Loss) on indemnification asset from covered loans sold Gain (Loss) on indemnification asset from covered loans sold. Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Schedule of Operating Leased Assets [Table] Schedule of Operating Leased Assets [Table] Land and Building [Member] Land and Building [Member] Operating Leased Assets [Line Items] Operating Leased Assets [Line Items] Operating Leases, Future Minimum Payments Due, Next Twelve Months Operating Leases, Future Minimum Payments Due, Next Twelve Months Operating Leases, Future Minimum Payments, Due in Two Years Operating Leases, Future Minimum Payments, Due in Two Years Operating Leases, Future Minimum Payments, Due in Three Years Operating Leases, Future Minimum Payments, Due in Three Years Operating Leases, Future Minimum Payments, Due in Four Years Operating Leases, Future Minimum Payments, Due in Four Years Operating Leases, Future Minimum Payments, Due in Five Years Operating Leases, Future Minimum Payments, Due in Five Years Operating Leases, Future Minimum Payments, Due Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Operating Leases, Future Minimum Payments Due Operating Leases, Future Minimum Payments Due Deposit Liabilities Disclosures [Text Block] Deposit Liabilities Disclosures [Text Block] Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Accounts Notes Loans And Financing Receivable By Receivable Type [Axis] Receivable Type [Domain] Financing Receivable Recorded Investment by Class of Financing Receivable [Axis] Financing Receivable Impaired [Line Items] Financing Receivable, Impaired [Line Items] Recorded Investment, With no specific allowance recorded Impaired Financing Receivable, with No Related Allowance, Recorded Investment Recorded Investment, With a specific allowance recorded Impaired Financing Receivable, with Related Allowance, Recorded Investment Recorded Investment, Total Impaired Financing Receivable, Recorded Investment UPB, With no specific allowance recorded Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance UPB, With a specific allowance recorded Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance UPB, Total Impaired Financing Receivable, Unpaid Principal Balance Related Specific Allowance, Impaired loans Impaired Financing Receivable, Related Allowance Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table] Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table] Exercise Price Range [Axis] Exercise Price Range [Axis] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain] Exercise Price Range 10.00-13.39 [Member] Exercise Price Range 10.00-13.39 [Member] Exercise Price Range 15.94-19.97 [Member] Exercise Price Range 15.94-19.97 [Member] Exercise Price Range 21.36-22.31 [Member] Exercise Price Range 21.36-22.31 [Member] Exercise Price 27.00 [Member] Exercise Price 27.00 [Member] Exercise Price 63.74 [Member] Exercise Price 63.74 [Member] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Equity Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Cash and due from banks: Cash and Due from Banks [Abstract] Non-interest bearing Cash and Due from Banks Interest bearing Interest-bearing Deposits in Banks and Other Financial Institutions Interest bearing deposits at Federal Reserve Bank Interest bearing deposits at Federal Reserve Bank Interest bearing deposits at Federal Reserve Bank. Federal funds sold Federal Funds Sold Cash and cash equivalents Investment securities available for sale, at fair value Loans held for sale Loans Receivable Held-for-sale, Net, Not Part of Disposal Group Loans (including covered loans of $809,540 and $1,043,864) FDIC indemnification asset Bank owned life insurance Bank Owned Life Insurance Equipment under operating lease, net Property Subject to or Available for Operating Lease, Net Goodwill and other intangible assets Intangible Assets, Net (Including Goodwill) Demand deposits: Non-interest bearing Noninterest-bearing Domestic Deposit, Demand Interest bearing Interest-bearing Domestic Deposit, Demand Savings and money market Deposits, Savings Deposits Total deposits Deposits Federal Home Loan Bank advances and other borrowings Long-term Federal Home Loan Bank Advances Long-term Debt and Capital Lease Obligations Long-term Debt and Capital Lease Obligations Other liabilities Other Liabilities Total liabilities Commitments and contingencies Commitments and Contingencies Common stock, par value $0.01 per share, 400,000,000 shares authorized; 103,626,255 and 101,656,702 shares issued and outstanding Common Stock, Value, Issued Paid-in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Total stockholders' equity Statement of Comprehensive Income [Abstract] Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Unrealized gains on investment securities available for sale: Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Abstract] Net unrealized holding gain (loss) arising during the period Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Reclassification adjustment for net securities gains realized in income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Net change in unrealized gains on securities available for sale Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Unrealized losses on derivative instruments: Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax [Abstract] Net unrealized holding gain (loss) arising during the period Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Reclassification adjustment for net losses realized in income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax Net change in unrealized losses on derivative instruments Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Statement [Table] Statement [Table] Statement [Line Items] Statement [Line Items] Cash Dividends Paid to Parent Company by Consolidated Subsidiaries Cash Dividends Paid to Parent Company by Consolidated Subsidiaries Unvested and restricted share awards [Member] Unvested and restricted share awards [Member] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Number of Share Awards Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Forfeitures and Expirations Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Forfeitures and Expirations Time Deposits, $100,000 or More Time Deposits, $100,000 or More Time deposit accounts with balances of $250,000 or more Time deposit accounts with balances of $250,000 or more The aggregate amount of domestic and foreign time deposit liabilities (including certificates of deposits, individual retirement accounts and open accounts) in denominations of $250,000 or more. Public funds deposits included in deposits Public funds deposits included in deposits Public funds deposits included in deposits. Interest-bearing Domestic Deposit, Brokered Interest-bearing Domestic Deposit, Brokered Carrying value of investment securities available for sale pledged as security for time deposits issued to State of Florida and other public funds deposits Carrying value of investment securities available for sale pledged as security for time deposits issued to State of Florida and other public funds deposits Carrying value of investment securities available for sale pledged as security for time deposits issued to State of Florida and other public funds deposits. Letter of Credit issued by FHLB pledged as security for public funds deposits Letter of Credit issued by FHLB pledged as security for public funds deposits Letter of Credit issued by FHLB pledged as security for public funds deposits FHLB Advances, Notes and Other Borrowings [Abstract] FHLB Advances, Notes and Other Borrowings [Abstract] Schedule of Federal Home Loan Bank, Advances, by Branch of FHLB Bank [Table Text Block] Schedule of Federal Home Loan Bank, Advances, by Branch of FHLB Bank [Table Text Block] Schedule of Debt [Table Text Block] Schedule of Debt [Table Text Block] Schedule of Financing Receivables Past Due [Table] Schedule of Financing Receivables Past Due [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Covered [Member] Covered [Member] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Domain] Financing Receivables, Period Past Due [Domain] 90 Days or More Past Due Financing Receivables, Equal to Greater than 90 Days Past Due [Member] Indirect Auto [Member] Indirect Auto [Member] Indirect Auto [Member] Financing Receivable Investment Past Due [Line Items] Financing Receivable, Recorded Investment, Past Due [Line Items] Capital Leases, Net Investment in Direct Financing Leases Capital Leases, Net Investment in Direct Financing Leases Purchases of loans Payments to Acquire Loans Held-for-investment Unpaid principal balance of real estate loans pledged as security for FHLB advances Unpaid principal balance of real estate loans pledged as security for FHLB advances The unpaid principal balance of pledged real estate loans. Recorded investment of real estate loans pledged as security for FHLB advances Pledged Financial Instruments, Not Separately Reported, Loans Receivable, for Federal Home Loan Bank Debt Unpaid principal balance of ACI loans Unpaid principal balance of ACI loans Amount of unpaid principal balance of ACI loans Unpaid principal balance of loans sold from pool of ACI loans with zero carrying value Unpaid principal balance of loans sold from pool of ACI loans with zero carrying value Unpaid principal balance of ACI loans sold The value at which non accrual status commercial relationships are evaluated for impairment The value at which non accrual status commercial relationships are evaluated for impairment The value at which non accrual status commercial relationships are evaluated for impairment Loans 90 days past due and still accruing Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans Financing receivable credit quality indicator, the value at which relationships are reevaluated at least annually Financing receivable credit quality indicator, the value at which relationships are reevaluated at least annually Financing receivable credit quality indicator, the value at which relationships are reevaluated at least annually Other Real Estate, Foreclosed Assets, and Repossessed Assets Other Real Estate, Foreclosed Assets, and Repossessed Assets Mortgage Loans in Process of Foreclosure, Amount Mortgage Loans in Process of Foreclosure, Amount Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by (used in) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Amortization and accretion, net Amortization accretion of discounts and premiums Amortization of discounts, premiums and net loan fees and costs on investment securities, loans and other financial instruments including the FDIC Indemnification Asset. Provision for loan losses Income from resolution of covered assets, net Net loss on FDIC indemnification (Gain) loss on sale of loans, net Gain (Loss) on Sale of Loans and Leases Increase in cash surrender value of bank owned life insurance Bank Owned Life Insurance Income Gain on investment securities available for sale, net Gain (Loss) on Investments (Gain) loss on other real estate owned Gains (Losses) on Sales of Other Real Estate Equity based compensation Share-based Compensation Depreciation and amortization Depreciation, Amortization and Accretion, Net Deferred income taxes Deferred Income Tax Expense (Benefit) Proceeds from sale of loans held for sale Proceeds from Sale of Loans Held-for-sale Loans originated for sale, net of repayments Payments for Origination of Mortgage Loans Held-for-sale Realized tax benefits from dividend equivalents and equity based compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Other: Increase (Decrease) in Operating Capital [Abstract] Increase in other assets Increase (Decrease) in Other Operating Assets Increase in other liabilities Increase (Decrease) in Other Operating Liabilities Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Net cash paid in business combination Purchase of investment securities Payments to Acquire Available-for-sale Securities Proceeds from repayments and calls of investment securities available for sale Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Purchase of non-marketable equity securities Payments to Acquire Federal Home Loan Bank Stock Proceeds from redemption of non-marketable equity securities Proceeds from Sale of Federal Home Loan Bank Stock Purchases of loans Loan originations, repayments and resolutions, net Payments for (Proceeds from) Loans and Leases Proceeds from sale of loans, net Proceeds from Sale of Loans Held-for-investment Decrease in FDIC indemnification asset for claims filed Purchase of premises and equipment, net Payments to Acquire Property, Plant, and Equipment Acquisition of equipment under operating lease, net Payments to Acquire Equipment on Lease Proceeds from sale of other real estate owned Proceeds from Sale of Other Real Estate Other investing activities Payments for (Proceeds from) Other Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Net increase in deposits Increase (Decrease) in Deposits Additions to Federal Home Loan Bank advances Proceeds from Federal Home Loan Bank Borrowings Repayments of Federal Home Loan Bank advances Repayments of Federal Home Loan Bank Borrowings Proceeds from Issuance of Long-term Debt Proceeds from Issuance of Long-term Debt Dividends paid Payments of Ordinary Dividends, Common Stock Realized tax benefits from dividend equivalents and equity based compensation Excess Tax Benefit from Share-based Compensation, Financing Activities Exercise of stock options Proceeds from Stock Options Exercised Other financing activities Proceeds from (Payments for) Other Financing Activities Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Net increase (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Supplemental Cash Flow Information [Abstract] Supplemental Cash Flow Information [Abstract] Interest Paid, Net Interest Paid, Net Income Taxes Paid, Net Income Taxes Paid, Net Supplemental schedule of non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Transfers from loans to other real estate owned and other repossessed assets Real Estate Owned, Transfer to Real Estate Owned Disbursement of loan proceeds from escrow Disbursement of loan proceeds from escrow Disbursement of loan proceeds from escrow Dividends declared, not paid Dividends declared and payable Dividends declared and payable Noncash or Part Noncash Acquisition, Investments Acquired Noncash or Part Noncash Acquisition, Investments Acquired Acquisition of assets under capital lease Capital Expenditures Incurred but Not yet Paid Long-term Debt, Gross Long-term Debt, Gross Debt Instrument, Unamortized Discount Debt Instrument, Unamortized Discount Long-term Debt Long-term Debt Capital Lease Obligations Capital Lease Obligations Long-term Debt and Capital Lease Obligations UPB of loans sold Unpaid principal balance of loans sold Unpaid principal balance of loans sold. Proceeds recorded in interest income Proceeds recorded in interest income from covered loans sold Proceeds recorded in interest income from covered loans sold. Net pretax impact on earnings from loans sold Net pretax impact on earnings from loans sold. Net pretax impact on earnings from loans sold. Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Unrecognized Tax Benefits Unrecognized Tax Benefits Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Unrecognized Tax Benefits, Period Increase (Decrease) Unrecognized Tax Benefits, Period Increase (Decrease) Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Unrealized Losses, Less than 12 Months Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Unrealized Losses, 12 Months or Greater Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Schedule of Quarterly Financial Information [Table Text Block] Schedule of Quarterly Financial Information [Table Text Block] Derivatives and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition [Abstract] Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition [Abstract] Employee Stock Option [Member] Employee Stock Option [Member] Allocated Share-based Compensation Expense Allocated Share-based Compensation Expense Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Allocated Share-based Compensation Expense, Net of Tax Allocated Share-based Compensation Expense, Net of Tax Commitments and Contingencies Disclosure [Abstract] Schedule of the Total Lending Related Commitments Outstanding Supply Commitment [Table Text Block] Leases [Abstract] Property Subject to or Available for Operating Lease, Gross Property Subject to or Available for Operating Lease, Gross Property Subject to or Available for Operating Lease, Accumulated Depreciation Property Subject to or Available for Operating Lease, Accumulated Depreciation Property Subject to or Available for Operating Lease, Net Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] BankUnited [Member] BankUnited [Member] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Tier One Leverage Capital Tier One Leverage Capital Tier One Leverage Capital to Average Assets Tier One Leverage Capital to Average Assets Tier One Leverage Capital Required to be Well Capitalized Tier One Leverage Capital Required to be Well Capitalized Tier One Leverage Capital Required to be Well Capitalized to Average Assets Tier One Leverage Capital Required to be Well Capitalized to Average Assets Tier One Leverage Capital Required for Capital Adequacy Tier One Leverage Capital Required for Capital Adequacy Tier One Leverage Capital Required for Capital Adequacy to Average Assets Tier One Leverage Capital Required for Capital Adequacy to Average Assets Common Equity Tier One Risk Based Capital Common Equity Tier One Risk Based Capital Common Equity Tier One Risk Based Capital Common Equity Tier One Risk Based Capital to Risk Weighted Assets Common Equity Tier One Risk Based Capital to Risk Weighted Assets Common Equity Tier One Risk Based Capital to Risk Weighted Assets Common Equity Tier One Risk Based Capital Required to be Well Capitalized Common Equity Tier One Risk Based Capital Required to be Well Capitalized Common Equity Tier One Risk Based Capital Required to be Well Capitalized Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Common Equity Tier One Risk Based Capital Required for Capital Adequacy Common Equity Tier One Risk Based Capital Required for Capital Adequacy Common Equity Tier One Risk Based Capital Required for Capital Adequacy Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Tier One Risk Based Capital Tier One Risk Based Capital Tier One Risk Based Capital to Risk Weighted Assets Tier One Risk Based Capital to Risk Weighted Assets Tier One Risk Based Capital Required to be Well Capitalized Tier One Risk Based Capital Required to be Well Capitalized Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Tier One Risk Based Capital Required for Capital Adequacy Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Capital Capital Capital to Risk Weighted Assets Capital to Risk Weighted Assets Capital Required to be Well Capitalized Capital Required to be Well Capitalized Capital Required to be Well Capitalized to Risk Weighted Assets Capital Required to be Well Capitalized to Risk Weighted Assets Capital Required to be Well Capitalized to Risk Weighted Assets Capital Required for Capital Adequacy Capital Required for Capital Adequacy to Risk Weighted Assets Capital Required for Capital Adequacy to Risk Weighted Assets Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Reconciliation of the Changes in the Fair Value of Assets and Liabilities Measured on a Recurring Basis, Unobservable Input Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Valuation Techniques and Unobservable Inputs Used in the Valuation of Financial Instruments Falling Within Level 3 of the Fair Value Hierarchy Fair Value Inputs, Assets, Quantitative Information [Table Text Block] Schedule of Assets for Which Nonrecurring Changes in Fair Value have been Recorded Fair Value Measurements, Nonrecurring [Table Text Block] Schedule of the Carrying Value and Fair Value of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] 30 - 59 Days Past Due Financing Receivables, 30 to 59 Days Past Due [Member] 60 - 89 Days Past Due Financing Receivables, 60 to 89 Days Past Due [Member] Loans, Current Financing Receivable, Recorded Investment, Current Financing Receivable, Recorded Investment, Past Due Financing Receivable, Recorded Investment, Past Due Covered loans net of premiums, discounts and deferred fees and costs Non-covered loans, net of premiums, discounts and deferred fees and costs Income Statement [Abstract] Interest income: Interest and Dividend Income, Operating [Abstract] Loans Interest and Fee Income, Loans and Leases Other Other Interest and Dividend Income Total interest income Interest and Dividend Income, Operating Interest expense: Interest Expense [Abstract] Deposits Interest Expense, Deposits Total interest expense Interest Expense Net interest income before provision for loan losses Interest Income (Expense), Net Provision for (recovery of) loan losses (including $2,251, $(243) and $(1,738) for covered loans) Net interest income after provision for loan losses Interest Income (Expense), after Provision for Loan Loss Non-interest income: Noninterest Income [Abstract] FDIC reimbursement of costs of resolution of covered assets Federal Deposit Insurance Corporation Indemnification Reimbursement Of Costs Of Resolution Of Covered Assets FDIC reimbursement of costs of resolution of covered assets Service charges and fees Fees and Commissions Gain (loss) on sale of loans, net (including gain (loss) related to covered loans of $34,929, $20,369 and $(16,195)) Gain on investment securities available for sale, net (including loss related to covered securities of $(963) for the year ended December 31, 2013) Lease financing Operating Leases, Income Statement, Lease Revenue Other non-interest income Noninterest Income, Other Operating Income Total non-interest income Noninterest Income Non-interest expense: Noninterest Expense [Abstract] Occupancy and equipment Occupancy, Net Amortization of FDIC indemnification asset Deposit insurance expense Federal Deposit Insurance Corporation Premium Expense Professional fees Professional Fees Telecommunications and data processing Communications and Information Technology Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease Other non-interest expense Other Noninterest Expense Total non-interest expense Noninterest Expense Net income Earnings Per Share, Basic Earnings Per Share, Basic Earnings Per Share, Diluted Earnings Per Share, Diluted Cash dividends declared per common share (in Dollars per Share) Common Stock, Dividends, Per Share, Declared Earnings Per Share [Abstract] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Dividend Equivalent Rights Dividend Equivalent Rights Number of freestanding rights to share in dividends on a one-for-one basis Basic earnings per common share: Earnings Per Share, Basic [Abstract] Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Distributed and undistributed earnings allocated to participating securities Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Net Income (Loss) Available to Common Stockholders, Basic Net Income (Loss) Available to Common Stockholders, Basic Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Weighted average common shares outstanding Weighted Average Number of Shares Issued, Basic Less average unvested stock awards Weighted Average Number of Shares, Common Stock Subject to Repurchase or Cancellation Weighted average shares for basic earnings per common share Weighted Average Number of Shares Outstanding, Basic Basic earnings per common share Diluted earnings per common share: Earnings Per Share, Diluted [Abstract] Numerator: Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Net Income (Loss) Available to Common Stockholders, Basic Adjustment for earnings reallocated from participating securities Undistributed Earnings (Loss) Allocated to Participating Securities, Diluted Income used in calculating diluted earnings per common share Net Income (Loss) Available to Common Stockholders, Diluted Denominator: Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract] Dilutive effect of stock options and preferred shares Weighted Average Number Diluted Shares Outstanding Adjustment Weighted average shares for diluted earnings per common share Weighted Average Number of Shares Outstanding, Diluted Diluted earnings per common share Stockholders' Equity - Other [Abstract] Stockholders' Equity - Other [Abstract] Noncash or Part Noncash Acquisition, Noncash Financial or Equity Instrument Consideration, Warrants Issued Noncash or Part Noncash Acquisition, Noncash Financial or Equity Instrument Consideration, Warrants Issued Class of Warrant or Right, Exercise Price of Warrants or Rights Class of Warrant or Right, Exercise Price of Warrants or Rights Shares of common stock called by each warrant (in Shares) Shares of common stock called by each warrant (in Shares) Shares of common stock called by each warrant. Cash amount holder entitled to receive per warrant (in Dollars per Unit) Cash amount holder entitled to receive per warrant (in Dollars per Unit) Amount holder entitled to receive per warrant. Provision (recovery of) for covered loans Provision for covered loans Available For Sale Securities Covered Gross Realized Gain Loss Net Available For Sale Securities Covered Gross Realized Gain Loss Net This item represents the difference between the gross realized gains and losses realized on the sale of covered securites available for sale. (Gain) loss on covered OREO, net Fair Value Inputs, Assets, Quantitative Information [Table] Fair Value Inputs, Assets, Quantitative Information [Table] Valuation Technique [Axis] Valuation Technique [Axis] Valuation Technique [Domain] Valuation Technique [Domain] Income Approach Valuation Technique [Member] Income Approach Valuation Technique [Member] Private label residential mortgage-backed securities and CMO's - Investment grade Private label residential mortgage-backed securities and CMO's - Investment grade [Member] Private label residential mortgage-backed securities and CMO's - Investment grade [Member] Private label residential mortgage-backed securities and CMO's - Non-investment grade Private label residential mortgage-backed securities and CMO's - Non-investment grade [Member] Private label residential mortgage-backed securities and CMO's - Non-investment grade [Member] Private label residential mortgage-backed securities and CMO's - Option-arm Private label residential mortgage-backed securities and CMO's - Option-arm [Member] Private label residential mortgage-backed securities and CMO's - Option-arm [Member] Weighted Average Weighted Average [Member] Fair Value Inputs Assets Quantitative Information [Line Items] Fair Value Inputs, Assets, Quantitative Information [Line Items] Asset transfers Fair Value, Assets, Level Transfers, Amount Fair Value, Assets, Level Transfers, Amount Current subordination level (in Percent) Current subordination level (in Percent) The current subordination level of securities. Fair value of Level 3 securities with zero subordination Fair Value of Level 3 Securities with Zero Subordination Fair Value of Level 3 Securities with Zero Subordination Ratio that the FDIC indemnification asset and the covered assets are risk-weighted at (in Percent) Ratio that the FDIC indemnification asset and the covered assets are risk-weighted at (in Percent) Ratio that the FDIC indemnification asset and the covered assets are risk-weighted at. FRB net reserve requirement FRB net reserve requirement FRB net reserve requirement. Time Deposit Maturities, Next Twelve Months Time Deposit Maturities, Next Twelve Months Time Deposit Maturities, Year Two Time Deposit Maturities, Year Two Time Deposit Maturities, Year Three Time Deposit Maturities, Year Three Time Deposit Maturities, Year Four Time Deposit Maturities, Year Four Time Deposit Maturities, Year Five Time Deposit Maturities, Year Five Time Deposit Maturities, after Year Five Time Deposit Maturities, after Year Five Schedule of Interest Rate Contract Derivative Financial Instruments and Related Hedged Items Schedule of Interest Rate Derivatives [Table Text Block] Schedule of Interest Rate Swaps Subject to Master Netting Agreements Schedule of Interest Rate Swaps Subject to Master Netting Agreements Tabular disclosure for offsetting or not offsetting fair value amounts recognized for derivative instruments against such amounts recognized for the right to reclaim cash collateral (a receivable) or the obligation to return cash collateral (a payable) arising from derivative instruments recognized at fair value. Condensed Balance Sheet [Table Text Block] Condensed Balance Sheet [Table Text Block] Condensed Income Statement [Table Text Block] Condensed Income Statement [Table Text Block] Condensed Cash Flow Statement [Table Text Block] Condensed Cash Flow Statement [Table Text Block] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Derivatives designated as cash flow hedges Designated as Hedging Instrument [Member] Derivatives not designated as hedges Not Designated as Hedging Instrument [Member] Derivative Instrument Risk [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Mortgage Loan Funding Commitment Mortgage Loan Funding Commitment [Member] Pay-Fixed interest Rate Swaps - CDs Pay-fixed Interest Rate Swap - CDs [Member] Interest rate swap used to hedge interest payments on CDs Pay-Fixed interest rate swaps - Borrowings Pay-Fixed Interest Rate Swaps - Borrowings [Member] Interest rate swaps used to hedge interest payments on variable rate borrowings Pay-Fixed Forward-Starting Swap - Borrowings Pay-Fixed Forward-Starting Swap - Borrowings [Member] Pay-Fixed Forward-Starting interest rate swaps used to hedge interest payments on variable rate borrowings [Member] Pay-fixed interest rate swaps [Member] [Member] Pay-fixed interest rate swaps [Member] [Member] Pay-fixed interest rate swaps [Member] [Member] Pay-variable interest rate swaps [Member] Pay-variable interest rate swaps [Member] Pay-variable interest rate swaps [Member] [Member] Interest rate caps purchased, indexed to 1-month Libor [Domain] Interest rate caps purchased, indexed to 1-month Libor [Domain] Interest rate caps purchased, indexed to 1-month Libor [Domain] Interest rate caps sold, indexed to 1-month Libor [Domain] [Domain] Interest rate caps sold, indexed to 1-month Libor [Domain] [Domain] Interest rate caps sold, indexed to 1-month Libor [Domain] [Domain] Pay-fixed interest rate swaps and caps [Member] Pay-fixed interest rate swaps and caps [Member] Pay-variable interest rate swaps and caps [Member] Pay-variable interest rate swaps and caps [Member] Other Assets Other Assets [Member] Derivatives Fair Value [Line Items] Derivatives, Fair Value [Line Items] Weighted average fixed rate of interest rate swaps (in Percent) Derivative, Average Fixed Interest Rate Weighted average remaining maturity of interest rate swap derivatives (in Duration) Derivative, Average Remaining Maturity Notional amount of interest rate swap derivatives Derivative, Notional Amount Interest rate derivative assets, fair value Interest Rate Derivative Assets, at Fair Value Interest rate derivative liabilities, fair value Interest Rate Derivative Liabilities, at Fair Value Computation of Basic and Diluted Earnings Per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Potentially Dilutive Securities Outstanding Categorized Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Fair Value Measurements Fair Value Disclosures [Text Block] Average recorded investment in impaired loans Impaired Financing Receivable, Average Recorded Investment Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Basis of Accounting [Text Block] Basis of Accounting [Text Block] Accounting Estimates Use of Estimates, Policy [Policy Text Block] Consolidation, Policy [Policy Text Block] Consolidation, Policy [Policy Text Block] Fair Value Measurement, Policy [Policy Text Block] Fair Value Measurement, Policy [Policy Text Block] Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents, Policy [Policy Text Block] Marketable Securities, Available-for-sale Securities, Policy [Policy Text Block] Marketable Securities, Available-for-sale Securities, Policy [Policy Text Block] Nonmarketable Equity Securities [Policy Text Block] Nonmarketable Equity Securities [Policy Text Block] Disclosure of accounting policy for Nonmarketable Equity Securities Loans Held-for-Sale Policy [Policy Text Block] Finance, Loan and Lease Receivables, Held-for-sale, Policy [Policy Text Block] Finance, Loan and Lease Receivables, Held-for-investment, Policy [Policy Text Block] Finance, Loan and Lease Receivables, Held-for-investment, Policy [Policy Text Block] ACI Loans [Policy Text Block] ACI Loans [Policy Text Block] Disclosure of accounting policy for ACI loans. Non-ACI Loans [Policy Text Block] Non-ACI Loans [Policy Text Block] Disclosure of accounting policy for Non-ACI loans. Loans and Leases Receivable, Nonaccrual Loan and Lease Status, Policy [Policy Text Block] Loans and Leases Receivable, Nonaccrual Loan and Lease Status, Policy [Policy Text Block] Impaired Loans [Policy Text Block] Impaired Loans [Policy Text Block] Disclosure of accounting policy for impaired loans. Loans and Leases Receivable, Troubled Debt Restructuring Policy [Policy Text Block] Loans and Leases Receivable, Troubled Debt Restructuring Policy [Policy Text Block] Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] FDIC Indemnification Asset [Policy Text Block] FDIC Indemnification Asset [Policy Text Block] Disclosure of accounting policy for FDIC Indemnification asset policy. Bank Owned Life Insurance [Policy Text Block] Bank Owned Life Insurance [Policy Text Block] Disclosure of accounting policy for Bank Owned Life Insurance policy. Lease, Policy [Policy Text Block] Lease, Policy [Policy Text Block] Goodwill and Intangible Assets, Policy [Policy Text Block] Goodwill and Intangible Assets, Policy [Policy Text Block] Finance, Loan and Lease Receivables, Held for Investments, Foreclosed Assets Policy [Policy Text Block] Finance, Loan and Lease Receivables, Held for Investments, Foreclosed Assets Policy [Policy Text Block] Property, Plant and Equipment, Policy [Policy Text Block] Property, Plant and Equipment, Policy [Policy Text Block] Transfers and Servicing of Financial Assets, Servicing of Financial Assets, Policy [Policy Text Block] Transfers and Servicing of Financial Assets, Servicing of Financial Assets, Policy [Policy Text Block] Income Tax, Policy [Policy Text Block] Income Tax, Policy [Policy Text Block] Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Derivatives, Policy [Policy Text Block] Derivatives, Policy [Policy Text Block] Transfers and Servicing of Financial Assets, Transfers of Financial Assets, Financings, Policy [Policy Text Block] Transfers and Servicing of Financial Assets, Transfers of Financial Assets, Financings, Policy [Policy Text Block] Advertising Costs, Policy [Policy Text Block] Advertising Costs, Policy [Policy Text Block] Earnings Per Share, Policy [Policy Text Block] Earnings Per Share, Policy [Policy Text Block] Reclassification, Policy [Policy Text Block] Reclassification, Policy [Policy Text Block] New Accounting Pronouncements, Policy [Policy Text Block] New Accounting Pronouncements, Policy [Policy Text Block] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Beginning Balance Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Reclassifications from non-accretable difference Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference Accretion Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion Ending Balance Discontinuation of Cash Flow Hedge Discontinuation of cash flow hedge, notional amount Discontinuation of cash flow hedge, notional amount. Gains and losses reported in AOCI that were reclassified into earnings as a result of discontinuance of cash flow hedges or early extinguishment of debt Amounts reclassified from AOCI into earnings as a result of discontinuation of cash flow hedges or early extinguishment of debt Amount of cash flow hedge gain or loss reclassified from AOCI into earnings as a result of discontinuation of cash flow hedges or early extinguishment of debt Amount expected to be reclassified from AOCI into income Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net Available for Sale Securities Pledged as Collateral for Interest Rate Swaps Available for Sale Securities Pledged as Collateral for Interest Rate Swaps Available for Sale Securities Pledged as Collateral for Interest Rate Swaps Cash pledged as collateral for interest rate swaps Cash Pledged as Collateral for Interest Rate Swaps Cash Pledged as Collateral for Interest Rate Swaps Mortgage loan commitment time period, minimum (in Duration) Mortgage loan commitment time period, minimum (in Duration) Mortgage loan commitment time period, minimum. Mortgage loan commitment time period, maximum (in Duration) Mortgage loan commitment time period, maximum (in Duration) Mortgage loan commitment time period, maximum. Derivative [Table] Derivative [Table] Derivative Contract Type [Domain] Forward Loan Sale Commitment Derivative Forward Loan Sale Commitment Derivative [Member] Derivative [Line Items] Derivative [Line Items] Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion Derivative, Notional Amount Schedule of Federal Home Loan Bank Advances, by Branch of FHLB Bank [Table] Schedule of Federal Home Loan Bank Advances, by Branch of FHLB Bank [Table] Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] Maturing in Next Twelve Months - 31 days or less Maturing in Next Twelve Months - 31 days or less Amount of federal home loan bank advances maturing in the next thirty-one days or less. Maturing in Next Twelve Months - 31 days or less, range of interest rates (in Percent) Maturing in Next Twelve Months - 31 days or less, range of interest rates (in Percent) Amount of Federal Home Loan Bank (FHLB) advances which have floating interest rates maturing in thirty-one days or less. Maturing in Next Twelve Months - 31 days or less, Weighted Average Rate (in Percent) Maturing in Next Twelve Months - 31 days or less, Weighted Average Rate (in Percent) Maturing in Next Twelve Months - 31 days or less, Weighted Average Rate. Maturing in Next Twelve Months - Over 31 days Maturing in Next Twelve Months - Over 31 days Amount of federal home loan bank advances maturing in the next fiscal year, after the first 31 days. Maturing in Next Twelve Months - Over 31 days, range of interest rates (in Percent) Maturing in Next Twelve Months - Over 31 days, range of interest rates (in Percent) Amount of Federal Home Loan Bank (FHLB) advances which have floating interest rates maturing in the first fiscal year, after the first 31 days. Maturing in Next Twelve Months - Over 31 days, Weighted Average Rate (in Percent) Maturing in Next Twelve Months - Over 31 days, Weighted Average Rate (in Percent) Maturing in Next Twelve Months - Over 31 days, Weighted Average Rate. Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Two Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Two Maturing in Year Two, range of interest rates (in Percent) Maturing in Year Two, range of interest rates (in Percent) Amount of Federal Home Loan Bank (FHLB) advances which have floating interest rates maturing in the second fiscal year. Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, One to Two Years from Balance Sheet Date Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, One to Two Years from Balance Sheet Date Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Three Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Three Maturing in Year Three, range of interest rates (in Percent) Maturing in Year Three, range of interest rates (in Percent) Amount of Federal Home Loan Bank (FHLB) advances which have floating interest rates maturing in the third fiscal year. Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, Two to Three Years from Balance Sheet Date Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, Two to Three Years from Balance Sheet Date Federal Home Loan Bank, Advances, Maturities Summary, Due after Year Five Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Five Maturing in After Year Five, range of interest rates (in Percent) Maturing in After Year Five, range of interest rates (in Percent) Maturing in After Year Five, range of interest rates (in Percent) Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, after Five Years from Balance Sheet Date Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, after Five Years from Balance Sheet Date Advances from Federal Home Loan Banks Excluding Unamortized Modification Costs Advances from Federal Home Loan Banks Excluding Unamortized Modification Costs Advances from Federal Home Loan Banks Excluding Unamortized Modification Costs Unamortized modification costs on FHLB Advances Unamortized modification costs on FHLB Advances Unamortized modification costs on FHLB Advances Advances from Federal Home Loan Banks Advances from Federal Home Loan Banks Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Investment Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Income Taxes Income Tax Disclosure [Text Block] Income Tax Disclosure [Table] Income Tax Disclosure [Table] Income Tax Disclosure [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] State and Local Jurisdiction [Member] State and Local Jurisdiction [Member] Internal Revenue Service (IRS) [Member] Internal Revenue Service (IRS) [Member] Income Tax Disclosure [Axis] Income Tax Disclosure [Axis] Income Tax Disclosure [Axis] Income Tax Disclosure [Domain] Income Tax Disclosure [Domain] [Domain] for Income Tax Disclosure [Axis] Income Tax Disclosure [Line Items] Income Tax Disclosure [Line Items] [Line Items] for Income Tax Disclosure [Table] Decrease in Unrecognized Tax Benefits is Reasonably Possible Decrease in Unrecognized Tax Benefits is Reasonably Possible Unrecognized Tax Benefits that Would Impact Effective Tax Rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Operating Loss Carryforwards Operating Loss Carryforwards Deferred Income Tax Benefit, Net Operating Loss Carryforward Deferred Income Tax Benefit, Net Operating Loss Carryforward Increase to deferred income tax assets due to net operating losses incurred in the current year. Other Tax Expense (Benefit) Other Tax Expense (Benefit) Deferred State and Local Income Tax Expense (Benefit), Tax Law Changes Deferred State and Local Income Tax Expense (Benefit), Tax Law Changes Deferred State and Local Income Tax Expense (Benefit), Tax Law Changes Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, net of tax Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, net of tax Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, net of tax Amortization Method Qualified Affordable Housing Project Investments Amortization Method Qualified Affordable Housing Project Investments Qualified Affordable Housing Project Investments, Commitment Qualified Affordable Housing Project Investments, Commitment Maximum Loss Exposure Amount, Affordable Housing VIEs Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Net unrealized holding gain (loss) arising during the period, Before Tax Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax Amounts reclassified to gain on investment securities available for sale, net, Before Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Net change in unrealized gains on securities available for sale, Before Tax Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax Net unrealized holding gain (loss) arising during the period, Tax Effect Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Amounts reclassified to gain on investment securities available for sale, net, Tax Effect Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Net change in unrealized gains on securities available for sale, Tax Effect Other Comprehensive Income (Loss), Available-for-sale Securities, Tax Net unrealized holding gain (loss) arising during the period, Net of Tax Amounts reclassified to gain on investment securities available for sale, net, Net of Tax Net unrealized holding gain (loss) arising during the period, Before Tax Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Amounts reclassified to interest expense on deposits, Before Tax Amounts reclassified to interest expense on deposits, before tax Amounts reclassified to interest expense on deposits. Amounts reclassified to interest expense on borrowings, Before Tax Amounts reclassified to interest expense on borrowings, before tax Amounts reclassified to interest expense on borrowings, before tax Net change in unrealized losses on derivative instruments, Before Tax Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax Net unrealized holding gain (loss) arising during the period, Tax Effect Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax Amounts reclassified to interest expense on deposits, Tax Effect Amounts reclassified to interest expense on deposits, tax effect Amount reclassified to interest expense on deposits, tax effect. Amounts reclassified to interest expense on borrowings, Tax Effect Amounts reclassified to interest expense on borrowings, tax effect Amounts reclassified to interest expense on borrowings, tax effect Net change in unrealized losses on derivative instruments, Tax Effect Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Net unrealized holding gain (loss) arising during the period, Net of Tax Amounts reclassified to interest expense on deposits, Net of Tax Amounts reclassified to interest expense on deposits, net of tax Amounts reclassified to interest expense on deposits, net of tax. Amounts reclassified to interest expense on borrowings, Net of Tax Amounts reclassified to interest expense on borrowings, net of tax Amounts reclassified to interest expense on borrowings, net of tax Other comprehensive income (loss), Before Tax Other Comprehensive Income (Loss), before Tax Other comprehensive income (loss), Tax Effect Other Comprehensive Income (Loss), Tax Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statements, Captions [Line Items] Condensed Cash Flow Statements, Captions [Line Items] Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed earnings of subsidiaries Equity in undistributed earnings of subsidiaries Equity in undistributed earnings of subsidiaries. Increase (Decrease) in Other Operating Assets and Liabilities, Net Increase (Decrease) in Other Operating Assets and Liabilities, Net Cash flows from investing activities: Capital contributions to subsidiary Capital contributions to subsidiary Capital contributions to subsidiary. Purchase of investment securities available for sale Other Cash flows from financing activities: Proceeds from Notes Payable Proceeds from Notes Payable Other Supplemental schedule of non-cash investing and financing activities: Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Preferred Stock [Member] Preferred Stock [Member] Paid-in Capital Additional Paid-in Capital [Member] Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive Income AOCI Attributable to Parent [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance (in Shares) Shares, Outstanding Balance Comprehensive income Stock Issued During Period, Shares, Conversion of Convertible Securities Stock Issued During Period, Shares, Conversion of Convertible Securities Stock Issued During Period, Value, Conversion of Convertible Securities Stock Issued During Period, Value, Conversion of Convertible Securities Dividends Dividends, Common Stock, Cash Equity based compensation (in Shares) Stock Issued During Period, Shares, Share-based Compensation, Gross Equity based compensation Stock Issued During Period, Value, Share-based Compensation, Gross Forfeiture of unvested shares (in Shares) Stock Issued During Period, Shares, Share-based Compensation, Forfeited Forfeiture of unvested shares Stock Issued During Period, Value, Share-based Compensation, Forfeited Exercise of stock options (in Shares) Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Tax benefits from dividend equivalents and equity based compensation Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation Balance (in Shares) Balance Document and Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Entity Public Float Entity Public Float Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Current Reporting Status Entity Current Reporting Status Entity Voluntary Filers Entity Voluntary Filers Summary of Average Balances and Weighted Average Rates Paid on Deposits Summary of Average Balances and Weighted Average Rates Paid on Deposits Tabular disclosure of the summary of average balances and weighted average rates paid on deposits. Maturities of Time Deposits [Table Text Block] Maturities of Time Deposits [Table Text Block] [Table Text Block] for Maturities of Time Deposits [Table] Schedule of Interest Expense on Deposits Schedule of Interest Expense on Deposits Tabular disclosure of Interest expense on deposits. Earnings Per Common Share Earnings Per Share [Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Unvested shares Stock options and warrants Equity Option [Member] Antidilutive Securities Excluded from Computation of Earnings per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Potentially dilutive securities outstanding (in Shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Entity by Location [Axis] Entity by Location [Axis] Location [Domain] Location [Domain] California [Member] California [Member] Florida [Member] Florida [Member] New York [Member] New York [Member] Others [Member] Others [Member] Percent of new loans (in Percent) Percent of loans net of premiums, discounts and deferred fees and costs, covered and non-covered (in Percent) Percent of loans net of premiums, discounts and deferred fees and costs, covered and non-covered (in Percent) Percent of loans net of premiums, discounts and deferred fees and costs, covered and non-covered. Deferred tax assets: Components of Deferred Tax Assets [Abstract] Excess of tax basis over carrying value of acquired loans Excess of tax basis over carrying value of acquired loans Excess of tax basis over carrying value of acquired loans. Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts Acquisition costs Acquisition costs Amount before allocation of valuation allowances of deferred tax asset attributable to acquisition costs. Deferred Tax Assets, Operating Loss Carryforwards Deferred Tax Assets, Operating Loss Carryforwards Net unrealized losses on derivatives designated as cash flow hedges Net unrealized losses on derivatives designated as cash flow hedges Amount before allocation of valuation allowances of deferred tax asset attributable to unrealized losses on derivatives designated as cash flow hedges. Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Deferred Tax Assets, Other Deferred Tax Assets, Other Deferred Tax Assets, Gross Deferred Tax Assets, Gross Deferred tax liabilities: Deferred Tax Liabilities, Gross [Abstract] Net unrealized gains on investment securities available for sale Net unrealized gains on investment securities available for sale Amount of deferred tax liability attributable to taxable temporary differences from unrealized gains on investment securities available for sale. Deferred Tax Liabilities, Leasing Arrangements Deferred Tax Liabilities, Leasing Arrangements Deferred Tax Liabilities, Other Deferred Tax Liabilities, Other Deferred Tax Liabilities, Gross Deferred Tax Liabilities, Gross Deferred Tax Assets, Net Deferred Tax Assets, Net Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Schedule of Property Subject to or Available for Operating Lease [Table Text Block] Schedule of Property Subject to or Available for Operating Lease [Table Text Block] Property, Plant and Equipment [Table Text Block] Property, Plant and Equipment [Table Text Block] Operating Leases of Lessee Disclosure [Table Text Block] Operating Leases of Lessee Disclosure [Table Text Block] Operating Leases of Lessor Disclosure [Text Block] Operating Leases of Lessor Disclosure [Text Block] FDIC Indemnification Asset Federal Deposit Insurance Corporation Indemnification Asset [Text Block] This Footnote represents the disclosure regarding the FDIC Indemnification Asset Summary of the Gains and Losses Associated with Covered Assets Summary of the Gains and Losses Associated with Covered Assets Tabular disclosure of gains and losses associated with covered assets. Changes in the FDIC Indemnification Asset FDIC Indemnification Asset Roll Forward [Table Text Block] FDIC Asset and Liability FDIC Asset and Liability [Table Text Block] [Table Text Block] for FDIC Asset and Liability [Table] U.S. Treasury securities Re-Remics Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Amortized Cost Gross Unrealized Gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Due in one year or less, Amortized Cost Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis Due after one year through five years, Amortized Cost Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis Due after five years through ten years, Amortized Cost Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis Due after ten years, Amortized Cost Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis Preferred stocks with no stated maturity Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis Due in one year or less, Fair Value Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Due after one year through five years, Fair Value Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value Due after five years through ten years, Fair Value Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value Due after ten years, Fair Value Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value Preferred Stocks with no stated maturity, Fair Value Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value Fair Value Interest Expense, Demand Deposit Accounts Interest Expense, Demand Deposit Accounts Interest Expense, Money Market Deposits Interest Expense, Money Market Deposits Interest Expense, Savings Deposits Interest Expense, Savings Deposits Interest Expense, Time Deposits Interest Expense, Time Deposits Interest Expense, Domestic Deposits Interest Expense, Domestic Deposits Lending Related Commitments [Table] Schedule of Fair Value, Off-balance Sheet Risks [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Commitments to fund loans Loan Origination Commitments [Member] Commitments to fund loans - Non-Covered Loan Origination Commitments - Non-Covered [Member] Commitments to purchase loans Loan Purchase Commitments [Member] Commitments to purchase loans - Non-Covered Loan Purchase Commitments - Non-Covered [Member] Unfunded commitments under lines of credit Unfunded commitments under lines of credit [Member] Unfunded commitments under lines credit - Covered Unfunded commitments under lines credit - Covered [Member] Unfunded commitments under lines of credit - Non-Covered Unfunded commitments under lines of credit - Non-Covered [Member] Commercial and standby letters of credit Commercial and standby letters of credit [Member] Commercial and standby letters of credit - Non-Covered Commercial and standby letters of credit - Non-Covered [Member] Non-covered Non-covered [Member] Lending Related Commitments [Line Items] Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] Total lending related commitments outstanding Unused Commitments to Extend Credit Discounted cash flow Total fair value of assets Fair Value Inputs, Prepayment Rate Fair Value Inputs, Prepayment Rate Probability rate of default Fair Value Inputs, Probability of Default Loss severity Fair Value Inputs, Loss Severity Fair Value Inputs, Discount Rate Fair Value Inputs, Discount Rate Years Ending December 31: Operating Leases, Future Minimum Payments Receivable, Current Operating Leases, Future Minimum Payments Receivable, Current Operating Leases, Future Minimum Payments Receivable, in Two Years Operating Leases, Future Minimum Payments Receivable, in Two Years Operating Leases, Future Minimum Payments Receivable, in Three Years Operating Leases, Future Minimum Payments Receivable, in Three Years Operating Leases, Future Minimum Payments Receivable, in Four Years Operating Leases, Future Minimum Payments Receivable, in Four Years Operating Leases, Future Minimum Payments Receivable, in Five Years Operating Leases, Future Minimum Payments Receivable, in Five Years Operating Leases, Future Minimum Payments Receivable, Thereafter Operating Leases, Future Minimum Payments Receivable, Thereafter Operating Leases, Future Minimum Payments Receivable Operating Leases, Future Minimum Payments Receivable Accumulated Other Comprehensive Income Loss [Table] Accumulated Other Comprehensive Income (Loss) [Table] Unrealized Gains on Investment Securities Available for Sale Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Unrealized Losses on Derivative Instruments Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Accumulated Other Comprehensive Income Loss [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Other comprehensive income, Beginning Balance Other comprehensive income Other comprehensive income, Ending Balance Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Original Loan to Value [Axis] Loan to Value [Axis] Loan to Value [Domain] Loan to Value [Domain] 60% or less Loan to Value Sixty Percent or Less [Member] 60% - 70% Loan to Value Sixty Percent to Seventy Percent [Member] 70% - 80% Loan to Value Seventy Percent to Eighty Percent [Member] More than 80% Loan to Value Eighty Percent or More [Member] Credit Score [Axis] Credit Score [Axis] Credit Score [Domain] Credit Score [Domain] FICO, 720 or less FICO Score 720 or Less [Member] FICO Score 720 or Less [Member] FICO, 721 to 740 FICO Score 721 to 740 [Member] FICO Score 721 to 740 [Member] FICO, 741 to 760 FICO Score 741 to 760 [Member] FICO, 761 or greater FICO Score 761 or Greater [Member] Financing Receivable Recorded Investment [Line Items] Financing Receivable, Recorded Investment [Line Items] Schedule of Loans Categorized Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Accretable Yield Rollfoward [Table Text Block] Accretable Yield Rollfoward [Table Text Block] Accretable Yield Rollfoward [Table Text Block] Covered Loan Sales - Residential [Table Text Block] Covered Loan Sales - Residential [Table Text Block] Covered Loan Sales - Residential [Table Text Block] Covered Loan Sales - Commercial [Table Text Block] Covered Loan Sales - Commercial [Table Text Block] Covered Loan Sales - Commercial [Table Text Block] Allowance for Credit Losses on Financing Receivables Allowance for Credit Losses on Financing Receivables [Table Text Block] Impaired Financing Receivables Impaired Financing Receivables [Table Text Block] Schedule of Recorded Investment in New and Non-ACI Loans on Non-Accrual Status Schedule of Financing Receivables, Non Accrual Status [Table Text Block] Financing Receivable Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table Text Block] Schedule of Past Due Financing Receivables Past Due Financing Receivables [Table Text Block] Discrete Income Tax Benefit Interest and Dividend Income, Operating Interest Expense Interest Income (Expense), Net Interest Income (Expense), after Provision for Loan Loss Noninterest Income Noninterest Expense Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Federal Home Loan Bank Advances, Disclosure [Text Block] Federal Home Loan Bank Advances, Disclosure [Text Block] Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Pass Pass [Member] Special mention Special Mention [Member] Substandard Substandard [Member] Doubtful Doubtful [Member] Income Taxes [Abstract] Income Taxes [Abstract] Current Federal Tax Expense (Benefit) Current Federal Tax Expense (Benefit) Current State and Local Tax Expense (Benefit) Current State and Local Tax Expense (Benefit) Current Income Tax Expense (Benefit) Current Income Tax Expense (Benefit) Deferred Federal Income Tax Expense (Benefit) Deferred Federal Income Tax Expense (Benefit) Deferred State and Local Income Tax Expense (Benefit) Deferred State and Local Income Tax Expense (Benefit) Deferred Income Tax Expense (Benefit)